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DOT-Z1 Pro is a vehicle installed distance measuring instrument (DMI) offering the most complete set of operating features, while being extremely simple to use.
Typical short-range EDMs can be used to measure distances as great as 5 kilometers at accuracies up to one part in 20,000, twice as accurate as taping. Instruments called total stations (Figure 5.14) combine electronic distance measurement and the angle measuring capabilities of theodolites in one unit. Next we consider how these instruments are used to measure horizontal positions in relation to established control networks. Figure 5.14: A modern total station.